[FIXED] [2.0m1] vanishing x-icon-btn / x-form-invalid-icon

Hi,
I have a problem with vanishing validation icon from formPanels. At first everything is ok. When I enter correct data inside the form then the validation icon disappears. But after making an error, validation icon will not appear anymore. Field is marked on red but, the icon is still set with x-hide-display. More, when I start typing, the position is always modified and is growing. See the link below (code within red box)